全文获取类型
收费全文 | 2357479篇 |
免费 | 172272篇 |
国内免费 | 3716篇 |
专业分类
耳鼻咽喉 | 32182篇 |
儿科学 | 76063篇 |
妇产科学 | 62811篇 |
基础医学 | 349051篇 |
口腔科学 | 63747篇 |
临床医学 | 212330篇 |
内科学 | 458395篇 |
皮肤病学 | 51775篇 |
神经病学 | 185602篇 |
特种医学 | 88416篇 |
外国民族医学 | 490篇 |
外科学 | 354593篇 |
综合类 | 48541篇 |
现状与发展 | 16篇 |
一般理论 | 849篇 |
预防医学 | 183385篇 |
眼科学 | 54517篇 |
药学 | 175840篇 |
19篇 | |
中国医学 | 5001篇 |
肿瘤学 | 129844篇 |
出版年
2021年 | 19333篇 |
2019年 | 19799篇 |
2018年 | 27339篇 |
2017年 | 20621篇 |
2016年 | 23022篇 |
2015年 | 25997篇 |
2014年 | 36550篇 |
2013年 | 54412篇 |
2012年 | 75302篇 |
2011年 | 80096篇 |
2010年 | 47457篇 |
2009年 | 44882篇 |
2008年 | 74988篇 |
2007年 | 79883篇 |
2006年 | 80661篇 |
2005年 | 78154篇 |
2004年 | 74616篇 |
2003年 | 71926篇 |
2002年 | 69566篇 |
2001年 | 108877篇 |
2000年 | 111569篇 |
1999年 | 93643篇 |
1998年 | 27075篇 |
1997年 | 23737篇 |
1996年 | 24112篇 |
1995年 | 22785篇 |
1994年 | 20950篇 |
1993年 | 19746篇 |
1992年 | 72032篇 |
1991年 | 70108篇 |
1990年 | 68418篇 |
1989年 | 65699篇 |
1988年 | 60322篇 |
1987年 | 59146篇 |
1986年 | 55238篇 |
1985年 | 53026篇 |
1984年 | 39318篇 |
1983年 | 33401篇 |
1982年 | 19863篇 |
1979年 | 35868篇 |
1978年 | 25658篇 |
1977年 | 21231篇 |
1976年 | 20332篇 |
1975年 | 21820篇 |
1974年 | 26150篇 |
1973年 | 24806篇 |
1972年 | 23200篇 |
1971年 | 22039篇 |
1970年 | 20247篇 |
1969年 | 19315篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
Controlled study of haloperidol, pimozide and placebo for the treatment of Gilles de la Tourette's syndrome 总被引:5,自引:0,他引:5
E Shapiro A K Shapiro G Fulop M Hubbard J Mandeli J Nordlie R A Phillips 《Archives of general psychiatry》1989,46(8):722-730
The results of this controlled study of the treatment of 57 patients with Gilles de la Tourette's syndrome suggested that both haloperidol and pimozide were more effective than placebo, but that haloperidol was slightly more effective than pimozide. Adverse effects occurred more frequently with haloperidol vs placebo than with pimozide vs placebo, but the frequency was not significantly different for haloperidol compared with pimozide. Clinically significant cardiac effects did not occur at a maximum dosage of 0.3 mg/kg or 20 mg/d for pimozide and 10 mg/d for haloperidol. However, the QTc interval was prolonged during pimozide treatment compared with that during haloperidol treatment, although the values for both medications were not in an abnormal range. 相似文献
963.
To date, chronic myopathy has not been reported (to our knowledge) to occur in carnitine palmityltransferase (CPT) deficiency, a disorder of muscle lipid metabolism. We describe two patients with CPT deficiency: a mother, who had a partial CPT deficiency associated with fixed proximal weakness but without rhabdomyolysis, and her son, who had a complete CPT deficiency (95% reduction in enzyme activity) and who suffered from classic attacks of exercise-induced rhabdomyolysis but had normal strength on recovery. Careful examination of family members of patients with complete CPT deficiency is suggested in order to identify clinically affected heterozygotes. 相似文献
964.
Paracoccidioidomycosis of the central nervous system presents either as meningeal or pseudotumoral lesions. Although occurring more frequently in the brain and meninges, they can occasionally involve the spinal cord. A case of paracoccidioidomycosis in the cervical spinal cord is reported in this paper. Difficulties in establishing the etiologic diagnosis, the importance of radiologic examination of the thorax, and the treatment of the patient are commented. In an extensive review of the literature on the subject, only three other cases have been found, which are also discussed. 相似文献
965.
J H Newcorn J M Halperin J M Healey J D O'Brien D M Pascualvaca L E Wolf A Morganstein V Sharma J G Young 《Journal of the American Academy of Child and Adolescent Psychiatry》1989,28(5):734-738
To assess the relationship between the DSM-III criteria for attention deficit disorder with hyperactivity (ADDH) and the DSM-III-R criteria for attention-deficit hyperactivity disorder (ADHD), children from an inner city parochial school were evaluated using a 30-item teacher questionnaire consisting of the DMS-III and DSM-III-R criteria for these disorders, the revised Conners Parent and Teacher Questionnaires, and a continuous performance test. Diagnostic groups were established based on teacher ratings of the DSM items and evaluated in relation to the rating scale data and continuous performance test. While children who were identified by teachers as having ADDH almost always satisfied the criteria for ADHD, a new group of children who were hyperactive and impulsive but less clearly inattentive also met the criteria for ADHD. Implications of the change in diagnostic criteria are discussed. 相似文献
966.
967.
968.
M M Pedrotti A L Basso 《Metabolic, pediatric, and systemic ophthalmology (New York, N.Y. : 1985)》1986,9(2-4):94-97
The authors describe a case of retrobulbar optic neuropathy in a patient with type 1 Diabetes mellitus. In spite of good metabolic control, there has been a slow but progressive functional visual decline. Worthy of note is the abnormal precocity of the appearance of the functional damage of the optic nerve compared to the involvement of the peripheral system. 相似文献
969.
970.
A case of Bonnet syndrome associated with blindness due to bilateral eye disease and a posterior parasagittal meningioma is reported. It is assumed that visual afferent deprivation alone is not enough to produce the syndrome and that, in most instances, a 'cerebral factor' must be operative if hallucinoses are to occur. The distinction between hallucinosis and hallucinations is favored and a common neural circuit for the mediation of hallucinotic imageries in general is suggested. One should not immediately put the blame on obvious eye or visual pathways affections when facing cases of Bonnet syndrome, as they are not likely to explain the complex array of images perceived by any given patient. On the contrary, the possibility of a clinically covert intracranial disease should be always raised and intensively looked for. 相似文献